Compare
GPT-5.5 Pro vs Grok 4.6
Add, remove, or swap models to compare them side by side.
| Attribute | GPT-5.5 Pro | Grok 4.6 |
|---|---|---|
| Scores | ||
| Intelligence (ECI) | 162 | 156 |
| Coding | — | 90 |
| Math | 98 | 91 |
| Reasoning & Knowledge | 87 | 73 |
| Agentic & Tools | — | 95 |
| Specifications | ||
| Developer | OpenAI | xAI |
| Family | GPT | Grok |
| Released | Apr 23, 2026 | Aug 12, 2026 |
| Parameters | — | — |
| Availability | API access | API access |
| Context window | 1.1M | 500K |
| Price — $/M input | $30.00 | $2.00 |
| Price — $/M output | $180.00 | $6.00 |
| Inputs | file, image, text | text, image, file |
| Outputs | text | text |
| Benchmarks | ||
| AIME 2024/2025 | 100% | 99% |
| ARC-AGI | 97% | 88% |
| ARC-AGI-2 | 85% | 67% |
| FrontierMath | 52% | — |
| FrontierMath Tier 4 | 40% | — |
| GPQA Diamond | 94% | 94% |
| SimpleBench | 77% | 76% |
| SimpleQA Verified | 65% | 49% |
| APEX | — | 65% |
| Humanity's Last Exam | — | 43% |
| SciCode | — | 56% |
| WebDev Arena | — | 1618 |
| WeirdML | — | 67% |
Use-case scores are 0–100 percentile composites across each area’s benchmarks, ranked against every model from the past year. Highlighted cells lead each row. Open a model for the full picture.
Popular comparisons
- Claude Fable 5 vs GPT-6 Astra
- GPT-6 Astra vs Kimi K3
- Gemini 3.7 Flash vs GPT-6 Astra
- GPT-6 Astra vs Grok 4.6
- DeepSeek-V4-Pro-0813 vs GPT-6 Astra
- GPT-6 Astra vs Qwen 3.7 Max
- GPT-6 Astra vs Muse Spark
- Claude Fable 5 vs Kimi K3
- Claude Fable 5 vs Gemini 3.7 Flash
- Claude Fable 5 vs Grok 4.6
- Claude Fable 5 vs DeepSeek-V4-Pro-0813
- Claude Fable 5 vs Qwen 3.7 Max
- Claude Fable 5 vs Muse Spark
- Gemini 3.7 Flash vs Kimi K3
- Grok 4.6 vs Kimi K3
- DeepSeek-V4-Pro-0813 vs Kimi K3
- Kimi K3 vs Qwen 3.7 Max
- Kimi K3 vs Muse Spark
- Gemini 3.7 Flash vs Grok 4.6
- DeepSeek-V4-Pro-0813 vs Gemini 3.7 Flash
- Gemini 3.7 Flash vs Qwen 3.7 Max
- Gemini 3.7 Flash vs Muse Spark
- DeepSeek-V4-Pro-0813 vs Grok 4.6
- Grok 4.6 vs Qwen 3.7 Max
- Grok 4.6 vs Muse Spark
- DeepSeek-V4-Pro-0813 vs Qwen 3.7 Max
- DeepSeek-V4-Pro-0813 vs Muse Spark
- Muse Spark vs Qwen 3.7 Max
- Claude Fable 5 vs Claude Opus 5
- GPT-5.6 Sol vs GPT-6 Astra
- GPT-5.5 vs GPT-6 Astra
- Kimi K2.6 vs Kimi K3
- Kimi K2.5 vs Kimi K3
Benchmarks & model data from Epoch AI (CC BY); pricing & specs from OpenRouter. ECI = Epoch Capabilities Index.